I have well water and a water softener. I have never had a problem with my tomato seedlings.
The amount of sodium in softened water is negligible and it replaces calcium and magnesium ions. Some people think that small amounts of sodium is actually beneficial for plants. I don't believe this but some people actually add salt solutions or kelp to their soils. I really don't think that sodium from softened water is harming your tomato seedlings.
Last edited by brownrexx; February 11, 2018 at 05:36 PM.
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